Port 448
ddm-ssl · TCP/UDP
| Range | System/well-known port (0–1023) |
|---|---|
| Protocol | TCP/UDP |
| Service | ddm-ssl |
Frequently asked questions
What is port 448 used for?
Port 448 is registered with the IANA for ddm-ssl (TCP/UDP). Description: DDM-Remote DB Access Using Secure Sockets.
Is port 448 a well-known port?
Yes. Port 448 is in the range 0–1023 (system or well-known ports). On Linux and macOS only privileged processes may bind to these ports.
How do I check whether port 448 is open?
Locally on Linux with ss -tulpn | grep ':448\b', on Windows with netstat -ano | findstr :448. To test a remote host use Test-NetConnection <host> -Port 448 in PowerShell or nc -zv <host> 448 on Linux/macOS.
How do I open port 448 in the firewall?
Ubuntu/Debian (ufw): sudo ufw allow 448/tcp. Fedora/RHEL (firewalld): sudo firewall-cmd --add-port=448/tcp --permanent, then firewall-cmd --reload. Windows (PowerShell as administrator): New-NetFirewallRule -DisplayName "Port 448" -Direction Inbound -Protocol TCP -LocalPort 448 -Action Allow.
IANA registry entries
| Protocol | Service | Description (IANA) |
|---|---|---|
| TCP | ddm-ssl | DDM-Remote DB Access Using Secure Sockets |
| UDP | ddm-ssl | DDM-Remote DB Access Using Secure Sockets |